Math Puzzle Challenge is a free set of cross-figure logic puzzles (the numerical version of a crossword). It contains some of the hardest cross-figure …
Math Hexagon Puzzles is a free set of cross-figure logic puzzles (the numerical version of a crossword), using a hexagonal grid instead of the usual c …
Chess Board Puzzles is a free pack of 18 different mathematical chess board puzzle challenges including some of the more popular chess board puzzles s …